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Comparison of Mach 10 Scramjet Measurements from Different Impulse Facilities

McGilvray, Matthew and Kirchhartz, Rainer M. and Jazra, Thomas (2010) Comparison of Mach 10 Scramjet Measurements from Different Impulse Facilities. AIAA Journal, 48 (8), pp. 1647-1651. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.J050025 ISSN 0001-1452

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Official URL: http://dx.doi.org/10.2514/1.J050025


A comparison is made between scramjet pressure data taken in two different impulse facilities, a reflected shock tunnel and an expansion tunnel, to provide verification of flow similarity. A two-dimensional hydrogen-fueled scramjet was tested in both facilities at a Mach 10, 66 kPa dynamic pressure, flight-replication condition. The entire flowfield was reproduced, including the inlet, combustor, and thrust nozzle. The expansion-tunnel model was a 40%- scaled model of that investigated in the shock tunnel, as the generated core flow was smaller. Applying density-length scaling, the density of the freestream was increased by a factor of 2.5 in the expansion tube to maintain similarity between the experimental setups. Results show agreement within the experimental uncertainty between the two data sets at similar fuel equivalence ratios, indicating the repeatability of scramjet pressure measurements, independent of the experimental facility used. It is further demonstrated that density-length scaling is appropriate for the flows generated in the investigated scramjet engines. Verification is also provided of the analysis technique used to process experimental scramjet data sets that involve transient inflow conditions.

Item URL in elib:https://elib.dlr.de/82117/
Document Type:Article
Title:Comparison of Mach 10 Scramjet Measurements from Different Impulse Facilities
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:August 2010
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.2514/1.J050025
Page Range:pp. 1647-1651
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Scramjet, hypersonic, hypervelocity, shock tunnel, expansion tunnel, hypervelocity wind tunnel
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Mobile Rocket Base
Deposited By: Kirchhartz, Rainer
Deposited On:26 Apr 2013 10:35
Last Modified:08 Mar 2018 18:42

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